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STMicroelectronics STPS20M60D
- Part No.:
- STPS20M60D
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
STPS20M60D.pdf
- Description:
- DIODE SCHOTTKY 60V 20A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,283
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Product details
Overview
STPS20M60D from STMicroelectronics is a single silicon Schottky rectifier diode in TO-220AC package, designed for high-frequency switch-mode power supplies. It delivers 20 A average forward current at 135 °C case temperature, 60 V repetitive peak reverse voltage, and typ. 0.37 V forward voltage drop at 10 A/125 °C - enabling high-efficiency operation in notebook and desktop AC adapters.
For engineers reviewing the STPS20M60D datasheet, STPS20M60D pinout, STPS20M60D application, or STPS20M60D equivalent, key selection criteria include low VF conduction loss, avalanche energy rating (26.4 kW @ 1 µs), thermal resistance (1.0 °C/W j-c), and TO-220AC mechanical compatibility with standard heatsinks.
Technical Context
This Schottky rectifier operates without minority-carrier storage delay, supporting switching frequencies beyond 1 MHz. Its low forward voltage (0.37–0.53 V across 10–20 A/125 °C) directly reduces conduction losses in primary-side synchronous rectification and secondary-side output stages.
The device is avalanche-rated with VARM = 80 V and PARM = 26.4 kW (tp = 1 µs), validated per AN1768/AN2025, and features a junction-to-case thermal resistance of 1.0 °C/W - enabling stable operation under transient overloads and sustained 20 A DC loads with appropriate heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 20 A at Tc = 135 °C - supports continuous output current in compact 65–100 W adapter designs |
| VRRM | 60 V - suitable for 48 V input rails and 5 V/12 V/19 V output rectification |
| VF (typ) | 0.37 V at 10 A, 125 °C - reduces conduction loss to ~3.7 W vs. ~10 W for comparable Si PN diodes |
| Rth(j-c) | 1.0 °C/W - allows 135 °C case temperature with ≤135 °C junction rise under 20 A load |
| IFSM | 400 A (10 ms sine) - withstands inrush and short-circuit transients in SMPS startup |
| Tj(max) | 150 °C - defines maximum allowable junction temperature before thermal runaway risk |
| IR (max) | 75 mA at 125 °C, VR = 60 V - limits standby leakage in high-efficiency no-load modes |
Pinout & Package
TO-220AC package with isolated tab (non-conductive mounting surface), 3-pin outline: Anode (pin 1), Cathode (pin 2), and electrically isolated metal tab (pin 3, thermal path only). Mounting torque: 0.4–0.6 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Lead) | Anode | Main current entry point; connects to transformer secondary or switching node |
| Pin 2 (Lead) | Cathode | Main current exit point; routes to output filter capacitor and load |
| Metal Tab | Thermal Interface / Isolated Heat Sink | Electrically isolated mounting surface; provides primary thermal path to heatsink (Rth(j-c) = 1.0 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche energy rating | 26.4 kW peak power (1 µs pulse, 25 °C) - enables robustness against inductive kickback in flyback/LLC topologies |
| Low VF temperature coefficient | VF decreases with rising Tj (0.37 V @ 125 °C vs. 0.47 V @ 25 °C) - improves thermal stability under load |
| High-frequency capability | No reverse recovery charge (Qrr ≈ 0) - eliminates switching loss and EMI from minority-carrier tail current |
| ECOPACK® compliance | Meets UL94 V0 flammability and RoHS/REACH requirements - supports green manufacturing and global compliance |
Applications
| Notebook AC Adapter | Desktop PC Power Supply |
|---|---|
|
Use Scenario: Secondary-side 19 V output rectification in 65–90 W slim adapters. IC Role / Device Role / Timing Role: Schottky rectifier replacing synchronous MOSFETs where gate drive complexity is undesirable. Use Value: 0.37 V VF at 125 °C reduces conduction loss by >60% vs. standard Si diodes, improving full-load efficiency to >88%. |
Use Scenario: +12 V rail rectification in ATX PSUs with active PFC front-end. IC Role / Device Role / Timing Role: High-current freewheeling diode in LLC resonant converter output stage. Use Value: Avalanche rating absorbs leakage inductance spikes during zero-voltage switching transitions, eliminating snubber losses. |
| Game Console Power Adapter | USB-C PD Fast Charger |
|
Use Scenario: 20 V output rectification in 100 W portable game station adapters. IC Role / Device Role / Timing Role: Primary output rectifier handling pulsed 20 A loads during GPU-intensive operation. Use Value: 400 A surge rating withstands transient current peaks during system wake-up without derating. |
Use Scenario: Dual-phase 20 V output rectification in 100 W GaN-based USB-C PD chargers. IC Role / Device Role / Timing Role: Low-VF, high-reliability discrete rectifier paired with GaN HEMTs. Use Value: TO-220AC mechanical footprint ensures drop-in replacement in existing layouts while delivering <0.4 V VF at 15 A/100 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20CPH06 | Same 20 A/60 V rating; VF = 0.52 V (typ, 20 A/125 °C); Rth(j-c) = 1.25 °C/W | Higher conduction loss and thermal resistance - requires larger heatsink for same 20 A load | Select when legacy Vishay footprint compatibility is required and 0.15 V higher VF is acceptable |
| ON Semiconductor MBR2060CT | Dual common-cathode die in TO-220AB; VF = 0.65 V (typ, 20 A/125 °C); no avalanche rating | Not avalanche-rated; dual configuration adds layout complexity for single-diode use cases | Select only if dual-diode topology is needed and avalanche robustness is not critical |
Compared with VS-20CPH06 and MBR2060CT, STPS20M60D offers the lowest VF (0.37 V), best thermal resistance (1.0 °C/W), and unique avalanche energy rating - making it optimal for high-efficiency, high-reliability 20 A SMPS outputs where thermal headroom and transient robustness are constrained.
Availability
STPS20M60D is available at Aetrix Electronics and suitable for notebook adapters, desktop PSUs, game console power supplies, and USB-C PD fast chargers requiring stable component supply and long-term industrial availability.
Supply support for STPS20M60D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
STPS20M60D belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-frequency, high-efficiency AC-DC and DC-DC conversion in space-constrained consumer power adapters.
FAQ
Is STPS20M60D suitable for synchronous rectification replacement?
No - STPS20M60D is a passive Schottky diode, not a synchronous rectifier IC or MOSFET driver. It replaces conventional PN diodes in freewheeling or output rectification roles but requires no gate control. Its zero Qrr and low VF provide near-synchronous efficiency without control complexity.
What is the maximum continuous case temperature for 20 A operation?
The datasheet specifies IF(AV) = 20 A at Tc = 135 °C. Operation at this current requires maintaining case temperature ≤135 °C via heatsink design accounting for Rth(j-c) = 1.0 °C/W and Tj(max) = 150 °C - allowing up to 15 °C ambient-to-case temperature rise.
Does STPS20M60D have a built-in thermal shutdown feature?
No - as a discrete Schottky diode, STPS20M60D has no integrated thermal protection circuitry. Safe operation relies on external thermal management: heatsink sizing, airflow, and system-level overtemperature monitoring must be implemented separately.
Can STPS20M60D be mounted directly to a PCB without a heatsink?
No - its 1.0 °C/W Rth(j-c) and 20 A rating require a mechanically attached heatsink. PCB copper alone cannot dissipate >7 W (P ≈ 0.385×20 + 0.0073×60² ≈ 12 W at 20 A RMS) without exceeding Tj(max); TO-220AC tab must be bolted to an external heatsink with 0.4–0.6 N·m torque.
STPS20M60D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 580 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 125 µA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- 150°C (Max)
STPS20M60D FAQ
1.How can I place an order for STPS20M60D through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20M60D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STPS20M60D reliable?
The price and inventory of STPS20M60D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20M60D is usually 5 days.
3.What payment methods are accepted for STPS20M60D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20M60D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20M60D?
STPS20M60D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20M60D order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STPS20M60D?
For technical support, including STPS20M60D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20M60D requirements.
6.How does Aetrix verify that STPS20M60D is sourced from the original manufacturer or authorized distributors?
All STPS20M60D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STPS20M60D meets industry standards.
7.What is the process for return or replacement of STPS20M60D?
All STPS20M60D units undergo pre-shipment inspection (PSI). If there is an issue with STPS20M60D, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STPS20M60D part is unused and in its original packaging.
Return procedure for STPS20M60D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20M60D Tags
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